Results 21 to 30 of about 4,271 (214)

Zero-Sequence Differential Current Protection Scheme for Converter Transformer Based on Waveform Correlation Analysis

Energies, 2020
Through the analysis of the recovery inrush current generated by the external fault removal of the converter transformer, it is pointed out that the zero-sequence current caused by the recovery inrush may result in the saturation of the neutral current ...
Tao Zheng, Xinhui Yang, Xingchao Guo, Xingguo Wang, Chengqi Zhang   +4 more
doaj   +1 more source

The.main types of wind turbines-generators in the power supply system

Известия высших учебных заведений: Проблемы энергетики, 2022
THE PURPOSE. This paper considers the problem of relay protection functioning when the current transformer reaches the saturation mode which is provided by transient processes.METHODS. MATLAB Simulink software environment allows reproducing the method of
V. A. Novobritsky, D. S. Fedosov
doaj   +1 more source

Detection of Current Transformer Saturation Based on Machine Learning

Mathematics
One of the tasks in the operation of electric power systems is the correct functioning of the protection system and emergency automation algorithms. Instrument voltage and current transformers, operating in accordance with the laws of electromagnetism ...
Ismoil Odinaev, Andrey Pazderin, Murodbek Safaraliev, Firuz Kamalov, Mihail Senyuk, Pavel Y. Gubin   +5 more
doaj   +1 more source

Analytical modeling and calculation of core grounding current in converter transformer

Frontiers in Energy Research, 2023
In recent years, the calculation of the core grounding current of the converter transformer is difficult, low precision, and time-consuming, especially when the core is grounded by multiple points.
Xiu Zhou, Tian Tian, Peng Wu, Yan Luo, Jin Bai, Ninghui He, Xiuguang Li   +6 more
doaj   +1 more source

Dynamic Differential Protection of Transformer Considering CT Saturation Based on Waveform Distortion Estimation

IEEE Access
The protection relay performs a significant role in maintaining the power system’s reliability and stability. However, Current Transformer (CT) saturation affects the overcurrent, differential and distance protection under various conditions ...
Nilesh Chothani, Swapnil Kumar
doaj   +1 more source

Transformer Core Saturation Fault Analysis using Current Sensor Signals and Thermal Image Features

Advances in Electrical and Computer Engineering, 2023
Transformer faults are identified and classified using current sensor signals. Transformer core saturation detection is challenging using current sensor signals due to overlapping of load-based faults such as overload, short circuit, grounding faults ...
VIDHYA, R., VANAJA RANJAN, P., SHANKER, N. R.   +2 more
doaj   +1 more source

Suppression of lung adenocarcinoma migration through organelle alkalization by human lactoferrin – albumin fusion

FEBS Open Bio, EarlyView.
This paper reveals how human lactoferrin–albumin fusion (hLF‐HSA) potently suppresses lung adenocarcinoma cell migration. hLF‐HSA upregulates NHE7, leading to Golgi alkalization, disruption of the Golgi secretome, downregulation of MMP1, and reversal of EMT. These findings suggest a novel Golgi‐targeting strategy to suppress cancer cell migration.
Hana Nopia, Masahiro Kimura, Daisuke Kurimoto, Atsushi Sato   +3 more
wiley   +1 more source

Waveform dissimilarity factor-based protection for main transformers in wind farms

Energy Reports, 2023
Current differential protection (CDP) is widely used as main protection for transformers due to its high reliability and selectivity. Owing to non-fundamental frequency current, magnetizing inrush and current transformer (CT) saturation, CDP may undergo ...
Yingyu Liang, Yaqin Wang, Zhi Zhang, Feng Zhao   +3 more
doaj   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Advanced Fault Detection in Power Transformers Using Improved Wavelet Analysis and LSTM Networks Considering Current Transformer Saturation and Uncertainties

Algorithms
Power transformers are vital and costly components in power systems, essential for ensuring a reliable and uninterrupted supply of electrical energy. Their protection is crucial for improving reliability, maintaining network stability, and minimizing ...
Qusay Alhamd, Mohsen Saniei, Seyyed Ghodratollah Seifossadat, Elaheh Mashhour   +3 more
doaj   +1 more source